JP5781374B2 - Lighting device - Google Patents

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JP5781374B2
JP5781374B2 JP2011131590A JP2011131590A JP5781374B2 JP 5781374 B2 JP5781374 B2 JP 5781374B2 JP 2011131590 A JP2011131590 A JP 2011131590A JP 2011131590 A JP2011131590 A JP 2011131590A JP 5781374 B2 JP5781374 B2 JP 5781374B2
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寺沢 徳晃
徳晃 寺沢
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Description

本発明は、固体発光素子を光源とした照明装置に関する。   The present invention relates to an illumination device using a solid light emitting element as a light source.

近年、環境意識の向上に伴い、白熱電球や蛍光灯に替わる新しい光源として、半導体レーザや発光ダイオード等の固体発光素子が注目されている。特に、発光ダイオード(以下、LEDと記載)は、長寿命で、光変換効率も高く、LEDを光源として使用した照明装置が注目されている。   In recent years, solid state light emitting devices such as semiconductor lasers and light emitting diodes have attracted attention as new light sources that can replace incandescent bulbs and fluorescent lamps as environmental awareness increases. In particular, a light emitting diode (hereinafter referred to as LED) has a long life and high light conversion efficiency, and an illuminating device using the LED as a light source has attracted attention.

例えば、特許文献1には、LEDを光源とする環管形の照明装置が開示されている。この照明装置は、複数のLEDが搭載された環状の基板が、上筐体と下筐体とに分離形成された環管状の筐体内に収容されている。ここで、複数のLEDは、筐体における管の軸を含む面と平行に取り付けられている。   For example, Patent Document 1 discloses a ring-shaped illumination device using an LED as a light source. In this illuminating device, an annular substrate on which a plurality of LEDs are mounted is housed in an annular tubular housing formed by separating an upper housing and a lower housing. Here, the plurality of LEDs are attached in parallel to a plane including the axis of the tube in the housing.

また、特許文献2には、複数のLEDが搭載された環状の基板の一方を、拡散部材にて覆い、他方に放熱部材を設けた環管形の照明装置が開示されている。これにおいても、複数のLEDは、拡散部材と放熱部材とで構成される環管状の部材における管の軸を含む面と平行に取り付けられている。   Patent Document 2 discloses a ring-shaped lighting device in which one of annular substrates on which a plurality of LEDs are mounted is covered with a diffusing member and a heat radiating member is provided on the other. Also in this case, the plurality of LEDs are attached in parallel to a plane including the axis of the tube in the annular tubular member constituted by the diffusion member and the heat dissipation member.

特開2010−135271号公報(2010年6月17日公開)JP 2010-135271 A (released on June 17, 2010) 特開2010−15713号公報(2010年1月21日公開)JP 2010-15713 A (published January 21, 2010)

しかしながら、特許文献1、2の照明装置では、照明装置の直下位置が極端に明るく、直下位置以外の周囲において暗いといった照度ムラの問題と、天井側へ光が照射されないといった、配光の狭さの問題がある。   However, in the illumination devices of Patent Documents 1 and 2, the position of the illumination device is extremely bright, the problem of uneven illumination such as darkness in the surroundings other than the directly below location, and the narrowness of light distribution such that light is not irradiated to the ceiling side. There is a problem.

これは、取り付けられたLEDの光軸の向きに起因する。LEDの光軸とは、LEDの光出射面の法線方向(光出射面に対して垂直な方向)の軸である。LEDからの照射光か、光出射方向が光軸方向である場合に最も輝度が高く、光出射方向が光軸方向から傾くに従い輝度は低下する。   This is due to the orientation of the optical axis of the mounted LED. The optical axis of the LED is an axis in the normal direction (direction perpendicular to the light emitting surface) of the light emitting surface of the LED. The luminance is highest when the light is emitted from the LED or when the light emission direction is the optical axis direction, and the luminance decreases as the light emission direction is inclined from the optical axis direction.

上述したように、特許文献1、2の照明装置では、LEDは、環管状の筐体等における管の軸を含む面と平行に取り付けられている。LEDの光出射面がLEDの取り付け面に平行な通常のLEDの場合、LEDの光軸は、床等の主たる被照射面の法線方向と平行となる。そのため、LEDから光軸方向に出射される輝度の最も高い光は、照明装置の直下を照らすこととなり、直下位置の照度が必然的に高くなる。加えて、環管形であるため、光が環の中央部分に集中し、直下位置はこの光によっても照らされるため、さらに照度が高くなる。なお、環の中央部分に集中する光は、LEDより斜めに(光軸方向に対して傾きを持って)出射された輝度の低い光ではあるが、環状に配置された複数のLEDからの光が集中して重なり合うので、極めて明るくなる。これに対し、直下位置の周囲へは、斜めに出射された輝度の低い光がさらに広がって照射されるため、必然的に暗くなってしまう。   As described above, in the illuminating devices of Patent Documents 1 and 2, the LED is attached in parallel to a plane including the axis of the tube in an annular casing or the like. In the case of a normal LED in which the light emitting surface of the LED is parallel to the LED mounting surface, the optical axis of the LED is parallel to the normal direction of the main irradiated surface such as a floor. For this reason, the light with the highest luminance emitted from the LED in the optical axis direction illuminates directly under the lighting device, and the illuminance at the position immediately below is inevitably high. In addition, because of the ring tube shape, the light concentrates in the central portion of the ring, and the position directly below is illuminated by this light, so that the illuminance is further increased. The light concentrated on the central part of the ring is light having a low luminance emitted obliquely from the LED (with an inclination with respect to the optical axis direction), but the light from a plurality of LEDs arranged in an annular shape. Because they are concentrated and overlapped, it becomes extremely bright. On the other hand, since the low brightness light emitted obliquely is further spread and irradiated around the position immediately below, it inevitably becomes dark.

また、LEDの光軸が主たる被照射面の法線方向を平行をなすように取り付けられた照明装置では、該照明装置が取り付けられている天井等の取り付け面側には光が照射されず、配光が狭くなる。   In addition, in an illuminating device attached so that the optical axis of the LED is parallel to the normal direction of the main irradiated surface, no light is irradiated to the mounting surface side such as a ceiling to which the illuminating device is attached, Light distribution becomes narrower.

本発明は、上記課題に鑑みなされてものであり、その目的は、直下位置に偏ることなく広い範囲に、光をムラを抑えて照射できると共に、天井側等の照明装置の取り付け面側への配光(広配光)も可能な照明装置を提供することにある。   The present invention has been made in view of the above problems, and its purpose is to irradiate light over a wide range without being biased to a position directly below, while suppressing unevenness, and to the mounting surface side of a lighting device such as a ceiling side. An object of the present invention is to provide an illumination device capable of light distribution (wide light distribution).

本発明の照明装置は、上記課題を解決するために、環状に並設された複数の固体発光素子と、該複数の固体発光素子からの出射光を透過するケース部材と、を備える照明装置であって、前記複数の固体発光素子は、光軸が被照射面の法線方向に対して該複数の固体発光素子がなす環の径方向外側を向いて傾斜すべく配置されてあることを特徴としている。   In order to solve the above problems, an illumination device according to the present invention is an illumination device including a plurality of solid light emitting elements arranged in a ring and a case member that transmits light emitted from the plurality of solid light emitting elements. The plurality of solid state light emitting devices are arranged such that the optical axis is inclined with respect to the normal direction of the irradiated surface so as to be directed toward the radially outer side of the ring formed by the plurality of solid state light emitting devices. It is said.

各固体発光素子から出射される光の輝度は、光出射方向が、固体発光素子の光出射面の法線方向の軸である光軸の方向(光軸方向)ある場合に、輝度が最も高く、光出射方向が、光軸から傾くに従い、徐々に輝度が低下する。上記構成では、複数の固体発光素子は、光軸が被照射面に対して該複数の固体発光素子がなす環の径方向外側を向いて傾斜して配置されているので、各固体発光素子から出射される最も輝度の高い光(光軸方向に出射される光)は、床面等の主たる被照射面の法線方向である照明装置の直下方向に対して、前記環の径方向外側に傾斜して照射される。そのため、光軸方向に出射された最も輝度の高い光を、直下位置の周囲に照射することができる。そして、直下位置においては、各固体発光素子から斜めに(光軸に対して傾きを持って)出射された輝度の低い光が照射されることとなるが、複数の固体発光素子から出射された光が重なり合うので、最も輝度の高い光が照射された周囲の位置に劣らない照度を得ることができる。さらに、各固体発光素子から斜めに(光軸に対して傾きを持って)出射された光は、天井等の照明装置の取り付け面側にも照射されるので、広い配光を実現することができる。   The luminance of the light emitted from each solid state light emitting element is highest when the light emitting direction is the direction of the optical axis (optical axis direction) which is the normal axis of the light emitting surface of the solid state light emitting element. As the light emission direction is inclined from the optical axis, the luminance gradually decreases. In the above configuration, the plurality of solid state light emitting devices are arranged with the optical axis inclined toward the radially outer side of the ring formed by the plurality of solid state light emitting devices with respect to the irradiated surface. The light with the highest brightness (light emitted in the optical axis direction) is emitted radially outside the ring with respect to the direction directly below the illumination device, which is the normal direction of the main irradiated surface such as the floor surface. Irradiated at an angle. Therefore, the light with the highest luminance emitted in the optical axis direction can be irradiated around the position immediately below. In the position immediately below, low-luminance light emitted obliquely (with an inclination with respect to the optical axis) from each solid-state light-emitting element is irradiated, but emitted from a plurality of solid-state light-emitting elements. Since the light overlaps, it is possible to obtain an illuminance that is not inferior to the surrounding position irradiated with the light with the highest luminance. Furthermore, light emitted obliquely (with an inclination with respect to the optical axis) from each solid-state light emitting element is also irradiated to the mounting surface side of the lighting device such as the ceiling, so that a wide light distribution can be realized. it can.

これにより、照明装置の直下位置に光を集中させることなく、固体発光素子から出射された光を直下位置の周囲にも効果的に振り分けて、床等の主たる被照射面を広い範囲でムラを抑えて照らすことができると共に、主たる被照射面に対する照度を確保しながら、天井側等の照明装置の取り付け面側への配光(広配光)が可能になる。   This effectively distributes the light emitted from the solid state light emitting device around the direct position without concentrating the light directly below the lighting device, and makes the main irradiated surface such as the floor uneven in a wide range. It is possible to control and illuminate, and light distribution (wide light distribution) to the mounting surface side of the lighting device such as the ceiling side is possible while ensuring the illuminance on the main irradiated surface.

本発明の照明装置は、さらに、前記複数の固体発光素子は、前記ケース部材を少なくとも一部として構成された環管状体の内部に収容され、照明装置が取り付けられた状態で、前記複数の固体発光素子は、前記環管状体の管の軸を含む面に対して、前記環管状体の環の径方向外側を照明装置の取り付け面側に持ち上げる方向に傾斜させてある構成とすることができる。   In the illumination device of the present invention, the plurality of solid state light emitting elements are housed inside an annular tubular body configured with at least a part of the case member, and the plurality of solid state elements are attached to the illumination device. The light emitting element can be configured to be inclined with respect to a surface including the axis of the tube of the annular tubular body in a direction in which the radially outer side of the ring of the annular tubular body is lifted to the mounting surface side of the lighting device. .

この場合、複数の固体発光素子は、例えば、前記環管状体の管の軸を含む面に対して、30〜60度の傾きを有している構成とすることができる。   In this case, the plurality of solid state light emitting elements can be configured to have an inclination of 30 to 60 degrees with respect to the plane including the axis of the tube of the annular tubular body, for example.

上記構成により、光軸が被照射面に対して複数の固体発光素子がなす環の径方向外側を向いて傾斜すべく配置されてなる、上記した本発明の照明装置を容易に実現することができる。   With the above configuration, it is possible to easily realize the above-described illumination device of the present invention in which the optical axis is arranged to be inclined toward the radially outer side of the ring formed by the plurality of solid state light emitting elements with respect to the irradiated surface. it can.

この場合、前記環管状体は、環管状の前記ケース部材と、前記複数の固体発光素子からの熱を放熱する環状の放熱部材より構成され、前記放熱部材は、前記ケース部材における当該ケース部材の環の内側部分であって、該環の径方向外側より径方向内側へと曲率を持って傾斜している部分に形成された、当該ケース部材の環に沿った環状の切り欠き部に設けられており、前記環状の放熱部材における外側の面に前記複数の固体発光素子が配置されている構成とすることもできる。   In this case, the annular tubular body is configured by the annular tubular case member and an annular heat radiating member that radiates heat from the plurality of solid state light emitting elements, and the heat radiating member is formed of the case member in the case member. Provided in an annular notch formed along the ring of the case member, which is an inner part of the ring and is formed in a part inclined with a curvature from the radially outer side to the radially inner side of the ring. The plurality of solid-state light emitting elements may be arranged on the outer surface of the annular heat dissipation member.

これによれば、環管状のケース部材に形成した切り欠き部に、複数の固体発光素子を取り付けた状態の環状の放熱部材を組み付けるだけで構成することができる。したがって、製造が容易であるといった効果を加えて奏する。しかも、放熱部材が照明装置の外面に露出しているので、放熱性が高められ、放熱部材の軽量化が図れ、ひいては照明装置の軽量化が図れる。   According to this, it can comprise only by assembling | attaching the cyclic | annular heat radiating member in the state which attached the some solid light emitting element to the notch part formed in the annular tubular case member. Therefore, the effect that manufacture is easy is added. And since the heat radiating member is exposed to the outer surface of an illuminating device, heat dissipation is improved, the heat radiating member can be reduced in weight, and the illuminating device can also be reduced in weight.

また、この場合、前記環状の放熱部材の外側の面には、当該放熱部材の環の周方向に連なると共に該環の径方向外側より径方向内側へと傾斜した複数の平坦面が形成されており、該平坦面に前記固体発光素子が配置されている構成とすることが好ましい。   Further, in this case, a plurality of flat surfaces are formed on the outer surface of the annular heat radiating member so as to be continuous in the circumferential direction of the ring of the heat radiating member and inclined radially inward from the radially outer side of the ring. It is preferable that the solid-state light emitting element is arranged on the flat surface.

環状の放熱部材に複数の固体発光素子を取り付ける場合、環の外側の面に周方向に並べて配置することとなるが、環の周であるため曲率を有しており、固体発光素子を密着させることができない恐れがある。密着させられない場合に、固体発光素子からの熱が放熱部材に効率よく伝えられず、放熱性が低下する。そのため、このような場合は、固体発光素子を放熱部材に密着させるための別部材等、何がしかの工夫が必要となる。   When attaching a plurality of solid state light emitting elements to the annular heat dissipation member, they will be arranged side by side on the outer surface of the ring in the circumferential direction. There is a fear that you can not. When the contact cannot be made, heat from the solid state light emitting device is not efficiently transmitted to the heat radiating member, and heat dissipation is reduced. Therefore, in such a case, some device is required, such as another member for bringing the solid light emitting element into close contact with the heat radiating member.

これに対し、上記構成によれば、管の外面を環の周方向に連なる複数の平坦面とし、平坦面に固体発光素子が取り付けられているので、固体発光素子を放熱部材に密着させるための別部材等を設けることなく、簡単に密着して配置することが可能となり、放熱性を高めることができる。   On the other hand, according to the above configuration, since the outer surface of the tube is a plurality of flat surfaces continuous in the circumferential direction of the ring, and the solid light emitting element is attached to the flat surface, the solid light emitting element is attached to the heat dissipation member. Without providing a separate member or the like, it can be arranged in close contact with each other, and heat dissipation can be improved.

さらに、この場合、前記複数の固体発光素子は、第1の角度で斜めに配置された組と、第2の角度で斜めに配置された組とを含んでいる構成とすることもできる。   Further, in this case, the plurality of solid state light emitting devices may include a set arranged obliquely at a first angle and a set arranged obliquely at a second angle.

これによれば、第1の角度で斜め配置された固体発光素子の組と、第2の角度で斜めに配置された固体発光素子の組とで、最も輝度の高い光が照射される領域、および斜めに出射された輝度の低い光が照射される領域が異なる。したがって、照度のムラをより一層抑えて均一に照らすことができると共に、広配光が可能になる。   According to this, the region where the light having the highest luminance is irradiated between the set of solid state light emitting elements arranged obliquely at the first angle and the set of solid state light emitting elements arranged obliquely at the second angle, The areas irradiated with light with low brightness emitted obliquely are different. Therefore, it is possible to illuminate uniformly while further suppressing unevenness in illuminance, and to enable wide light distribution.

本発明の照明装置は、上記課題を解決するために、固体発光素子がそれぞれ複数並設して収容され、該固体発光素子からの光を透過するケース部材を少なくとも一部として構成された第1および第2の管状体を備える照明装置であって、前記複数の固体発光素子は、照明装置が取り付けられた状態で前記第1の管状体に収容された固体発光素子の光軸と前記第2の管状体に収容された固体発光素子の光軸とが互いに外側を向いて被照射面の法線方向に対して傾斜すべく配置されていることを特徴としている。   In order to solve the above-described problem, the illumination device of the present invention includes a plurality of solid state light emitting elements that are accommodated in parallel, and a first case member configured to transmit light from the solid state light emitting element. And the second tubular body, wherein the plurality of solid state light emitting elements include an optical axis of the solid state light emitting element housed in the first tubular body in a state in which the lighting apparatus is attached and the second solid state light emitting element. The solid-state light-emitting elements housed in the tubular body are arranged so that the optical axes of the solid-state light emitting elements face each other and are inclined with respect to the normal direction of the irradiated surface.

これによれば、ケース部材の内部に複数の固体発光素子が並設けられている第1および第2の管状体が、照明装置が取り付けられた状態で、複数の固体発光素子の光軸が互いに外側を向いて被照射面の法線方向に対して傾斜して配置されているので、第1および第2の管状体内部の各固体発光素子から出射される最も輝度の高い光(光軸方向に出射される光)は、床面等の主たる被照射面の法線方向に対して、互いに外側向いて照射される。そのため、光軸方向に出射された最も輝度の高い光を、第1および第2の管状体を有する照明装置の直下位置の両側に照射することができる。そして、照明装置の直下位置においては、第1および第2の管状体内部の各固体発光素子から、互いに内側に向かって斜めに(光軸に対して傾きを持って)出射された輝度の低い光が照射されることとなるが、第1および第2の管状体内部の各固体発光素子から出射された光が重なり合うので、最も輝度の高い光が照射された直下位置の両側に劣らない照度を得ることができる。さらに、第1および第2の管状体内部の各固体発光素子から斜めに(光軸に対して傾きを持って)出射された光は、天井等の照明装置の取り付け面側にも照射されるので、広い配光を実現することができる。   According to this, the first and second tubular bodies in which the plurality of solid state light emitting elements are provided in parallel inside the case member are arranged such that the optical axes of the plurality of solid state light emitting elements are mutually connected in a state where the lighting device is attached. Since the light emitting element is disposed so as to incline with respect to the normal line direction of the irradiated surface, the light with the highest luminance emitted from each solid light emitting element inside the first and second tubular bodies (optical axis direction) Are emitted toward the outside with respect to the normal direction of the main irradiated surface such as the floor surface. Therefore, the light with the highest luminance emitted in the optical axis direction can be applied to both sides of the position immediately below the illumination device having the first and second tubular bodies. Then, at a position directly below the illumination device, the brightness emitted from the solid light emitting elements inside the first and second tubular bodies obliquely toward the inside (inclined with respect to the optical axis) is low. Although the light is irradiated, the light emitted from the respective solid state light emitting elements inside the first and second tubular bodies overlaps, so that the illuminance is not inferior to both sides immediately below the position where the light having the highest luminance is irradiated. Can be obtained. Furthermore, the light emitted obliquely (with an inclination with respect to the optical axis) from the respective solid state light emitting elements inside the first and second tubular bodies is also irradiated on the mounting surface side of the lighting device such as the ceiling. Therefore, a wide light distribution can be realized.

これにより、照明装置の直下位置に光を集中させることなく、固体発光素子から出射された光を直下位置の周囲にも効果的に振り分けて、床等の主たる被照射面を広い範囲でムラを抑えて照らすことができると共に、主たる被照射面に対する照度を確保しながら、天井側等の照明装置の取り付け面側への配光(広配光)が可能になる。   This effectively distributes the light emitted from the solid state light emitting device around the direct position without concentrating the light directly below the lighting device, and makes the main irradiated surface such as the floor uneven in a wide range. It is possible to control and illuminate, and light distribution (wide light distribution) to the mounting surface side of the lighting device such as the ceiling side is possible while ensuring the illuminance on the main irradiated surface.

本発明によれば、照明装置の直下位置に光を集中させることなく、固体発光素子から出射された光を直下位置の周囲にも効果的に振り分けて、床等の主たる被照射面を広い範囲でムラを抑えて照らすことができると共に、主たる被照射面に対する照度を確保しながら、天井側等の照明装置の取り付け面側への配光(広配光)が可能になる。   According to the present invention, the light emitted from the solid state light emitting element is effectively distributed to the periphery of the position immediately below the light source without concentrating the light at the position directly below the lighting device, so that the main irradiated surface such as the floor is in a wide range. Thus, it is possible to illuminate while suppressing unevenness, and light distribution (wide light distribution) to the mounting surface side of the lighting device such as the ceiling side is possible while ensuring illuminance on the main irradiated surface.

図1(a)は、本発明の実施の一形態である環管形ランプの平面図であり、図1(b)は、上記環管形ランプの底面図、図1(c)は、上記環管形ランプの側面図である。FIG. 1 (a) is a plan view of a ring-shaped lamp according to an embodiment of the present invention, FIG. 1 (b) is a bottom view of the ring-shaped lamp, and FIG. It is a side view of an annular tube lamp. 図1(a)のA−A線矢視断面図である。It is AA arrow sectional drawing of Fig.1 (a). 図1(b)のB−B線矢視断面図である。It is a BB arrow directional cross-sectional view of FIG.1 (b). 上記環管形ランプの分解斜視図である。It is a disassembled perspective view of the said annular tube lamp. 上記環管形ランプからの光の配光を模式的に示す説明図であり、環管形ランプにおける、環の中心を挟んで右側と左側に位置する2つのLEDに着目してそれらの配光を示している。It is explanatory drawing which shows typically the light distribution of the said annular tube lamp, and those light distributions paying attention to two LED located in the right side and the left side on both sides of the center of a ring in an annular tube lamp Is shown. 上記環管形ランプにおいて、直下位置と周囲位置との照度を同等とすることができた一実施例を模式的に示す説明図である。In the said ring-shaped tube lamp, it is explanatory drawing which shows typically one Example which was able to make equivalent the illumination intensity of a direct lower position and a periphery position. 図7(a)および図7(b)はそれぞれ、本実施形態の変形例の環管形ランプの構成を示す断面図である。FIG. 7A and FIG. 7B are cross-sectional views each showing the configuration of a ring-shaped lamp of a modification of the present embodiment. 本発明の実施の他の形態の照明装置の構成を模式的に示す説明図である。It is explanatory drawing which shows typically the structure of the illuminating device of the other form of implementation of this invention.

以下、本発明の好ましい実施の形態につき、図面を参照して具体的に説明する。   Hereinafter, preferred embodiments of the present invention will be specifically described with reference to the drawings.

図1〜図4は、本発明に係る本実施形態の照明装置である環管形ランプ100を示している。このうち、図1(a)は、環管形ランプ100の平面図であり、図1(b)は、環管形ランプ100の底面図、図1(c)は、環管形ランプ100の側面図である。当該環管形ランプ100が図示しない照明器具等に取り付けられた状態では、底面図にて示した側が、床等の主たる被照射面を向き、平面図にて示した面が、天井等の当該環管形ランプ100の取り付け面を向く。また、図2は、図1(a)のA−A線矢視断面図であり、図3は、図1(b)のB−B線矢視断面図である。そして、図4は、環管形ランプ100の分解斜視図である。   1 to 4 show an annular lamp 100 that is an illumination device of the present embodiment according to the present invention. 1A is a plan view of the ring-shaped lamp 100, FIG. 1B is a bottom view of the ring-shaped lamp 100, and FIG. It is a side view. In a state where the annular tube lamp 100 is attached to a lighting fixture or the like (not shown), the side shown in the bottom view faces the main irradiated surface such as the floor, and the surface shown in the plan view corresponds to the ceiling or the like. It faces the mounting surface of the ring-shaped lamp 100. 2 is a cross-sectional view taken along line AA in FIG. 1A, and FIG. 3 is a cross-sectional view taken along line BB in FIG. FIG. 4 is an exploded perspective view of the annular tube lamp 100.

本実施形態の環管形ランプ100は、図1〜図4の何れかに示すように、環管状体14と、環管状体14内部に収容された複数のLED(固体発光素子)2と、複数のLEDを搭載したLED基板3と、LED2の熱を放熱するヒートシンク(放熱部材)6と、口金12とを備えている。   As shown in any of FIGS. 1 to 4, the annular lamp 100 according to the present embodiment includes an annular tubular body 14, a plurality of LEDs (solid state light emitting elements) 2 housed in the annular tubular body 14, An LED substrate 3 on which a plurality of LEDs are mounted, a heat sink (heat radiating member) 6 that radiates heat from the LEDs 2, and a base 12 are provided.

環管状体14は、少なくとも一部がケース部材1よりなる環管状の部材であり、内部に複数のLED2を収容するものである。本実施形態では、環管状体14は、ケース部材1とヒートシンク6の一部よりなる。環管状体14の大部分を構成する環管状のケース部材1は、ポリカーボネート等の透光性を有する合成樹脂から形成されており、LED2から出射された光を、拡散しつつ透過させるものである。環管状体14においては、このケース部材1よりなる部分が、LED2からの光を拡散しつつ透過する発光面となる。   The annular tubular body 14 is an annular tubular member, at least a part of which is made of the case member 1, and accommodates a plurality of LEDs 2 therein. In the present embodiment, the annular tubular body 14 includes a part of the case member 1 and the heat sink 6. The annular tubular case member 1 constituting most of the annular tubular body 14 is formed of a synthetic resin having translucency such as polycarbonate, and transmits light emitted from the LED 2 while diffusing. . In the annular tubular body 14, the portion made of the case member 1 serves as a light emitting surface that transmits light from the LED 2 while diffusing.

ケース部材1には、図4に示すように、口金16を取り付ける部分に、口金16を取り付けるための開口11aと、電源基板15を挿入するための開口11bとが形成されている。口金12は電源基板15と配線により接続されており、商用電源を電源基板15へ給電するものである。電源基板15は給電された商用電源を、発光部のLED2が必要とする直流電流/直流電圧へ変換し、LED2へ給電するものである。ケース部材1には口金16の形状に合わせた形で開口11aが設けられており、組立時、当該開口11aに口金16は挿入される。また、ケース部材1には、ケース部材1の環に沿った環状の切り欠き部11cが形成されており、この切り欠き部11cに、複数のLED2が搭載された環状のヒートシンク6が取り付けられている。ケース部材1に設けられた開口11bより挿入された電源基板15は、ケース上蓋12で開口11bを覆うことにより、ケース部材1内に封入される。   As shown in FIG. 4, the case member 1 is formed with an opening 11 a for attaching the base 16 and an opening 11 b for inserting the power supply board 15 at a portion where the base 16 is attached. The base 12 is connected to the power supply board 15 by wiring, and feeds commercial power to the power supply board 15. The power supply board 15 converts the supplied commercial power source into a direct current / direct current voltage required by the LED 2 of the light emitting unit, and supplies power to the LED 2. The case member 1 is provided with an opening 11a according to the shape of the base 16, and the base 16 is inserted into the opening 11a during assembly. Further, the case member 1 is formed with an annular notch 11c along the ring of the case member 1, and an annular heat sink 6 on which a plurality of LEDs 2 are mounted is attached to the notch 11c. Yes. The power supply substrate 15 inserted from the opening 11 b provided in the case member 1 is enclosed in the case member 1 by covering the opening 11 b with the case upper lid 12.

なお、図2では、環管状体14の管の伸びる方向と直交する方向の断面形状が円形状をなす例を示しているが、断面形状は楕円形状であってもよい。また、環管状体14は、全てがケース部材1より構成されていてもよい。但し、その場合には、複数のLED2が搭載された環状のヒートシンク6を、ケース部材1内部に収容するために、ケース部材を当該ケース部材の管の軸を含む面と平行に上下に分離して形成する必要がある。   In addition, although the cross-sectional shape of the direction orthogonal to the direction where the pipe | tube of the annular tubular body 14 extends shows circular shape in FIG. 2, the cross-sectional shape may be elliptical shape. Further, the annular tubular body 14 may be entirely composed of the case member 1. However, in that case, in order to accommodate the annular heat sink 6 on which the plurality of LEDs 2 are mounted inside the case member 1, the case member is separated vertically into a plane including the axis of the tube of the case member. Need to be formed.

ヒートシンク6は、LED2で発生した熱を逃がすための部材であり、材質としては、熱伝導性に優れかつ軽量でもある、アルミニウムが専ら利用されている。本実施形態では、上述したように、ヒートシンク6は、ケース部材1に形成された切り欠き部11cに取り付けられることで、環管状体14の一部を構成する。このようなヒートシンク6は、環管状体14(ケース部材1)における管の伸びる方向のほぼ全域に配置されるため、放熱部材としての機能に加えて、環管状体14(ケース部材1)の形状を保持する、環管形ランプ100の構造体としても機能するものである。   The heat sink 6 is a member for releasing the heat generated in the LED 2, and as the material, aluminum that is excellent in thermal conductivity and light in weight is exclusively used. In the present embodiment, as described above, the heat sink 6 is attached to the notch 11 c formed in the case member 1, thereby constituting a part of the annular tubular body 14. Since such a heat sink 6 is arrange | positioned in the whole region of the direction where the pipe | tube extends in the annular tubular body 14 (case member 1), in addition to the function as a heat radiating member, the shape of the annular tubular body 14 (case member 1) It also functions as a structure of the annular tube lamp 100 that holds

複数のLED2は、このようなヒートシンク6に搭載された環管形ランプ100の光源である。複数のLED2は、ヒートシンク6上に所定間隔で並ぶように環状に配置されている。そして、複数のLED2は、図2に示すように、LED2の光軸Sが、床等の被照射面の法線方向に対して、複数のLED2がなす環(ヒートシンク6の環)の径方向外側を向くように傾斜して配置されている。複数のLED2を、このように配置することで、床等の主たる被照射面を広い範囲で照度のムラを抑えて照らすことができると共に、主たる被照射面に対する照度を確保しながら、天井側等の環管形ランプ100の取り付け面側への配光(広配光)が可能になる。これについては後述する。   The plurality of LEDs 2 are light sources of the annular tube lamp 100 mounted on the heat sink 6. The plurality of LEDs 2 are annularly arranged on the heat sink 6 so as to be arranged at a predetermined interval. As shown in FIG. 2, the plurality of LEDs 2 are arranged such that the optical axis S of the LED 2 is in the radial direction of the ring (ring of the heat sink 6) formed by the plurality of LEDs 2 with respect to the normal direction of the irradiated surface such as the floor. Inclined so as to face outward. By arranging the plurality of LEDs 2 in this manner, the main irradiated surface such as a floor can be illuminated with a wide range of illuminance while suppressing illuminance unevenness, while ensuring the illuminance on the main irradiated surface, etc. Light distribution (wide light distribution) to the mounting surface side of the annular tube lamp 100 becomes possible. This will be described later.

また、LED2は、LED基板3を介してヒートシンク6上に配置されている。LED基板3は、たとえばガラスエポキシ樹脂製であり、表面には図示しない配線が形成されている。複数のLED2は、該配線によって、電源基板15と接続されている。LED2としては、たとえば表面実装用のパッケージ型に構成された白色LEDが好適に用いられる。なお、図中、参照符号9にて示すものは、各LED2の保持体である。   The LED 2 is disposed on the heat sink 6 via the LED substrate 3. The LED substrate 3 is made of, for example, a glass epoxy resin, and a wiring (not shown) is formed on the surface. The plurality of LEDs 2 are connected to the power supply substrate 15 by the wiring. As the LED 2, for example, a white LED configured in a surface mount package type is preferably used. In addition, what is shown with the referential mark 9 in a figure is a holding body of each LED2.

口金12は、電源基板15と、当該環管形ランプ100が取り付けられる図示しない照明器具側から伸びる配線とを電気的に接続するものである。本実施形態の環管形ランプ100では、電源基板15を備えた構成としているが、電源基板15に替えて、従来からある環管形の蛍光照明器具からの給電にて、複数のLED2が点等するような部材を具備させることで、従来からある環管形の蛍光照明器具に、環管形蛍光ランプに替えて使用できる構成とすることもできる。   The base 12 electrically connects the power supply board 15 and a wiring extending from a lighting fixture (not shown) to which the annular lamp 100 is attached. The annular tube lamp 100 of the present embodiment is configured to include the power supply substrate 15. However, instead of the power supply substrate 15, a plurality of LEDs 2 are turned on by power supply from a conventional annular tube fluorescent lighting device. It can also be set as the structure which can be used instead of a ring-shaped fluorescent lamp for the conventional ring-shaped fluorescent lighting fixture by providing such a member.

次に、図2、図4を用いて、ケース部材1に形成された切り欠き部11c、該切り欠き部11cに取り付けられるヒートシンク6、およびこれらの組み付け方について説明する。   Next, the notch 11c formed in the case member 1, the heat sink 6 attached to the notch 11c, and how to assemble them will be described with reference to FIGS.

切り欠き部11cは、ケース部材1における当該ケース部材1の環の内側部分であって、該環の径方向外側より径方向内側へと曲率を持って傾斜している部分に形成されている。換言すると、切り欠き部11cは、ケース部材1における、当該ケース部材1を当該ケース部材1の管の軸を含む面に沿って2分したうちの当該環管形ランプ100の取り付け面(天井)側かつ当該ケース部材1の環の内周側に形成されている。そして、上述したように、切り欠き部11cは、当該ケース部材1の環に沿った環状に形成されている。   The notch portion 11c is an inner portion of the ring of the case member 1 in the case member 1 and is formed in a portion inclined with a curvature from the radially outer side to the radially inner side of the ring. In other words, the notch portion 11c is a mounting surface (ceiling) of the annular tube lamp 100 of the case member 1 which is divided into two along the surface including the axis of the tube of the case member 1 in the case member 1. And the inner peripheral side of the ring of the case member 1. As described above, the notch portion 11 c is formed in an annular shape along the ring of the case member 1.

このような切り欠き部11cに取り付けられるヒートシンク6も、切り欠き部11cに取り付けられることで、環管状体14の一部となるような環状に形成されている。そして、ヒートシンク6は、図2に示されるように、環管状体14の一部となるような曲面よりなる露出面6aを有しており、この露出面6aが、外気に直接接触することでLED2の熱を外気へ逃がす熱交換部として機能する。ヒートシンク6における露出面6a側とは逆側の面は、LED2の配置面6bとなっている。この配置面6bは、環管状体14の管の軸Xを含む面Y(図中一点鎖線)に対して、環管状体14の環の径方向外側を当該環管形ランプ100の取り付け面(天井側)側に持ち上げる方向に傾斜している。   The heat sink 6 attached to the notch 11c is also formed in an annular shape so as to become a part of the annular tubular body 14 by being attached to the notch 11c. As shown in FIG. 2, the heat sink 6 has an exposed surface 6a made of a curved surface that becomes a part of the annular tubular body 14, and the exposed surface 6a is in direct contact with the outside air. It functions as a heat exchanging part that releases the heat of the LED 2 to the outside air. The surface opposite to the exposed surface 6 a side of the heat sink 6 is an arrangement surface 6 b of the LED 2. The arrangement surface 6b is arranged on the outer side in the radial direction of the ring of the annular tubular body 14 with respect to the surface Y including the axis X of the tube of the annular tubular body 14 (the dashed line in the figure). Inclined in the direction of lifting to the (ceiling side) side.

上記ヒートシンク6は、中空の円錐を円の径方向に沿って輪切りにした形状を有しているとも表現できる。輪切りにした環状体の外側のテーパー面が配置面6bであり、複数のLED2がLED基板3を介して配置面6bに取り付けられている構成である。   The heat sink 6 can also be expressed as having a shape obtained by rounding a hollow cone along the radial direction of a circle. The tapered surface outside the ring-shaped annular body is the arrangement surface 6 b, and a plurality of LEDs 2 are attached to the arrangement surface 6 b via the LED substrate 3.

電気基板15および口金16は、複数のLED2が搭載されたLED基板3に電気的かつ機械的に接続されており、LED基板3がヒートシンク6に固定されることで、ヒートシンク6と一体ものとして扱うことができる。   The electric board 15 and the base 16 are electrically and mechanically connected to the LED board 3 on which the plurality of LEDs 2 are mounted, and the LED board 3 is fixed to the heat sink 6 so that it is handled as an integral part of the heat sink 6. be able to.

このような構成では、環管状のケース部材1に形成した切り欠き部11cに、電気基板15および口金16並びに複数のLED2が取り付けられた状態の環状のヒートシンク6を組み付け、その後、ケース上蓋12を嵌め込むことで、環管形ランプ100を製造することができる。したがって、環管状のケース部材1内部に環管のヒートシンク6が収容された構成であっても、製造し易いといったメリットがある。しかも、ヒートシンク6の露出面6aが環管形ランプ100の外面に露出しているので、放熱性が高められ、放熱部材の軽量化が図れ、ひいては照明装置の軽量化が図れる。   In such a configuration, the annular heat sink 6 with the electric substrate 15, the base 16, and the plurality of LEDs 2 attached thereto is assembled to the notch 11 c formed in the annular tubular case member 1, and then the case upper lid 12 is attached. The annular tube lamp 100 can be manufactured by fitting. Therefore, even when the annular heat sink 6 is accommodated in the annular tubular case member 1, there is an advantage that it is easy to manufacture. In addition, since the exposed surface 6a of the heat sink 6 is exposed on the outer surface of the annular tube lamp 100, heat dissipation is improved, the weight of the heat dissipation member can be reduced, and the weight of the lighting device can be reduced.

ところで、放熱性を確保するためには、LED2をLED基板3を介してヒートシンク6に密着させる必要がある。しかしながら、環状のヒートシンク6において、配置面6bは、環の周であるため曲率を有しており、環の径が小さい場合、LED2を密着させることができない恐れがあり、LED2をヒートシンク6に密着させるための別部材等、何がしかの工夫が必要となる。   By the way, in order to ensure heat dissipation, it is necessary to adhere LED2 to the heat sink 6 via the LED board 3. FIG. However, in the annular heat sink 6, the arrangement surface 6 b has a curvature because it is the circumference of the ring, and if the diameter of the ring is small, there is a possibility that the LED 2 cannot be brought into close contact with the heat sink 6. Some device is necessary, such as another member to make it.

そこで、本実施形態では、図3に示すように、ヒートシンク6におけるLED2の配置面6bは、環の周方向に連なる、環の径方向外側より径方向内側へと傾斜した複数の平坦面6cに加工されており、該平坦面にLED2を配置している。これにより、LED2をヒートシンク6に密着させるための別部材等を設けることなく、簡単に密着して配置することが可能となり、放熱性を高めることができる。   Therefore, in the present embodiment, as shown in FIG. 3, the arrangement surface 6 b of the LED 2 in the heat sink 6 is formed by a plurality of flat surfaces 6 c that are continuous in the circumferential direction of the ring and are inclined from the radially outer side of the ring to the radially inner side. The LED 2 is disposed on the flat surface. Thereby, it becomes possible to arrange the LED 2 in close contact with each other without providing a separate member or the like for bringing the LED 2 into close contact with the heat sink 6, and heat dissipation can be improved.

但し、配置面6bの曲率が、問題にならない程に、ヒートシンク6の環のサイズが大きい場合には、このような平坦面6cに加工する必要はない。   However, when the ring size of the heat sink 6 is so large that the curvature of the arrangement surface 6b does not cause a problem, it is not necessary to process the flat surface 6c.

次に、ヒートシンク6に取り付けられている複数のLED2の向きについて説明する。   Next, the direction of the plurality of LEDs 2 attached to the heat sink 6 will be described.

上述したように、ヒートシンク6におけるLED2の配置面6bは、環管状体14の管の軸Xを含む面Y(図中一点鎖線)に対して、環管状体14の環の径方向外側を当該環管形ランプ100の取り付け面(天井側)側に持ち上げる方向に傾斜している(図2参照)。   As described above, the arrangement surface 6b of the LED 2 in the heat sink 6 is located on the outer side in the radial direction of the ring of the annular tubular body 14 with respect to the plane Y (the dashed line in the figure) including the axis X of the tube of the annular tubular body 14. It inclines in the direction raised to the attachment surface (ceiling side) side of the ring-shaped lamp 100 (refer FIG. 2).

そのため、配置面6bに取り付けられたLED2の光軸(光出射面の法線方向の軸)Sも、被照射面の法線方向である環管形ランプ100の直下方向ではなく、直下方向よりも環管状体14の環の径方向外側に傾斜した方向を向いて配置される。なお、環管形ランプ100が、床面等に平行な天井面に取り付けられた状態では、環管形ランプ100の直下方向は、環管状体14の軸Xを含む面Yの法線方向となる。   Therefore, the optical axis S (axis in the normal direction of the light exit surface) S of the LED 2 attached to the arrangement surface 6b is not directly below the annular tube lamp 100, which is the normal direction of the irradiated surface, but from directly below. Also, the ring-shaped tubular body 14 is arranged so as to face a direction inclined radially outward of the ring. When the annular tube lamp 100 is attached to a ceiling surface parallel to the floor surface or the like, the direction directly below the annular tube lamp 100 is the normal direction of the surface Y including the axis X of the annular tube body 14. Become.

LED2を、その光軸Sが、直下方向ではなく、直下方向に対して環管状体14の環の径方向外側に傾斜した方向を向くように配置することで、環管形ランプ100の直下位置に光を集中させることなく、LED2から出射された光を直下位置の周囲にも効果的に振り分けることができる。その結果、床等の主たる被照射面を広い範囲で照度のムラを抑えて照らすことができると共に、主たる被照射面に対する照度を確保しながら、天井側等の環管形ランプ100の取り付け面側への配光(広配光)が可能になる。   The LED 2 is disposed so that its optical axis S is not in the direct downward direction but in a direction inclined radially outward of the ring of the annular tubular body 14 with respect to the direct downward direction. The light emitted from the LED 2 can be effectively distributed around the position immediately below without concentrating the light. As a result, the main irradiated surface such as the floor can be illuminated in a wide range while suppressing unevenness in illuminance, and the mounting surface side of the annular lamp 100 such as the ceiling side is secured while ensuring the illuminance on the main irradiated surface. Light distribution (wide light distribution) is possible.

図5に、環管形ランプ100からの光の配光を示す。なお、図5では、環管形ランプ100における、環の中心を挟んで右側と左側に位置する2つのLED2R・2Lに着目して示している。   FIG. 5 shows the light distribution from the annular tube lamp 100. In FIG. 5, in the annular tube lamp 100, two LEDs 2R and 2L positioned on the right side and the left side across the center of the ring are shown.

LED2から出射される光は、光軸方向に出射される光、つまり、LED2の光出射面の法線方向に出射される光が、最も輝度が高い。そして、光の出射される角度が光軸より傾くに従い、つまり、前記法線方向に対して成す角度が大きくなるに従い、徐々に輝度が低下する。   The light emitted from the LED 2 has the highest luminance when emitted in the optical axis direction, that is, light emitted in the normal direction of the light emitting surface of the LED 2. The luminance gradually decreases as the angle at which the light is emitted is inclined with respect to the optical axis, that is, as the angle formed with respect to the normal direction is increased.

LED2R・2Lの場合、上述ように斜め向きに取り付けられているので、各LED2R・2Lから光軸方向に出射された最も輝度の高い光L1は、床面等の主たる被照射面に対して、環管状体14の管の軸Xを含む面Y(一点鎖線)の法線方向Z(二点鎖線)、つまり、環管形ランプ100の直下方向よりも、環管状体14の環の径方向外側に傾斜して出射される。つまり、LED2Rから出射された最も輝度の高い光L1は、直下位置P1よりも右側にずれた周囲位置P3に照射され、LED2Lから出射された最も輝度の高い光L1は、直下位置P1よりも左側にずれた周囲位置P2に照射される。この直下位置P1から左右へのずれ量は、配置面6bにおける、前記面Y(一点鎖線)に対してなす角度θ(傾斜角)が大きくなるほど大きくなり、直下位置P1周囲のより広い範囲に照射することができる。   In the case of the LEDs 2R and 2L, since they are mounted obliquely as described above, the light L1 having the highest luminance emitted from the LEDs 2R and 2L in the optical axis direction is directed to the main irradiated surface such as the floor surface. The normal direction Z (two-dot chain line) of the plane Y (one-dot chain line) including the axis X of the tube of the annular tubular body 14, that is, the radial direction of the ring of the annular tubular body 14 rather than the direction directly below the annular tube lamp 100. Inclined outward and emitted. That is, the light L1 having the highest luminance emitted from the LED 2R is irradiated to the peripheral position P3 shifted to the right side from the position P1 directly below, and the light L1 having the highest luminance emitted from the LED 2L is on the left side from the position P1 directly below. Irradiated to the peripheral position P2 shifted to. The amount of deviation from the immediately lower position P1 to the left and right becomes larger as the angle θ (inclination angle) formed with respect to the surface Y (one-dot chain line) on the arrangement surface 6b is larger, and the wider area around the immediately lower position P1 is irradiated. can do.

このように、上記のようにLED2を斜めに取り付けることで、最も輝度の高い光L1を、直下位置P1の周囲に対して照射することができ、より直下位置P1から離れた範囲に光を出射することができるので、最も輝度の高い光L1が直下位置P1に照射されていた構成に比して、照射範囲を広げることができる。   As described above, by attaching the LED 2 obliquely as described above, the light L1 having the highest luminance can be emitted to the periphery of the direct position P1, and the light is emitted to a range further away from the direct position P1. Therefore, the irradiation range can be expanded as compared with the configuration in which the light L1 having the highest luminance is applied to the position P1 directly below.

一方、直下位置P1には、LED2R・2Lから斜めに出射された輝度が光軸方向に比較して低い光が照射されることとなるが、LED2R・2Lから出射された光が直下位置P1で重なり合うので、最も輝度の高い光L1が照射された周囲位置P2・P3に劣らない照度を得ることができる。   On the other hand, although the light emitted obliquely from the LEDs 2R and 2L is irradiated at the position P1 directly below the light axis direction, the light emitted from the LEDs 2R and 2L is at the position P1 directly below. Since they overlap, it is possible to obtain an illuminance that is not inferior to the surrounding positions P2 and P3 irradiated with the light L1 having the highest luminance.

加えて、LED2R・2Lから光軸方向に対して斜めに出射された光は、天井等の環管形ランプ100の取り付け面側にも照射されるので、天井側も照らすことができ、広配光を実現することができる。   In addition, the light emitted from the LEDs 2R and 2L obliquely with respect to the optical axis direction is also radiated to the mounting surface side of the annular lamp 100 such as the ceiling. Light can be realized.

なお、図示してはいないが、直下位置P1と周囲位置P2、P3の間には、輝度が最も高い光と最も低い間に含まれる光が照射される。また、上記した光L1、L2、L3は、何れも、ケース部材1にてその一部は拡散され、拡散された光は種々の方向へ照射される。   In addition, although not shown in figure, between the direct position P1 and the surrounding positions P2 and P3, the light contained between the light with the highest brightness | luminance and the lowest is irradiated. In addition, all of the above-described lights L1, L2, and L3 are diffused by the case member 1, and the diffused light is irradiated in various directions.

図6に、環管形ランプ100において、直下位置P1と周囲位置P2、P3の間の照度を同等とすることができた一例を示す。図6の例では、環管状体14における管の軸Xの床面からの高さ2200mm、LED2の傾斜角θを45度、環管状体14における軸間距離(軸Xと軸Xとの間の距離)を373mmとしている。なお、主たる被照射面の照度は、LED2の配置、LED2をなすLEDデバイスの配光特性、環管状体14をなすケース部材1のカバーの透過率/分散度(拡散度)、ケース部材1の管の内径、環管状体14の床面からの距離、環管状体14の径等により、制御することができる。   FIG. 6 shows an example in which the illuminance between the direct position P1 and the peripheral positions P2 and P3 can be made equal in the ring-shaped lamp 100. In the example of FIG. 6, the height of the tube axis X of the annular tubular body 14 from the floor surface is 2200 mm, the inclination angle θ of the LED 2 is 45 degrees, and the interaxial distance in the annular tubular body 14 (between the axis X and the axis X). ) Is 373 mm. The illuminance of the main irradiated surface is determined by the arrangement of the LED 2, the light distribution characteristics of the LED device constituting the LED 2, the transmittance / dispersion degree (diffusivity) of the cover of the case member 1 constituting the annular tubular body 14, It can be controlled by the inner diameter of the tube, the distance from the floor surface of the annular tubular body 14, the diameter of the annular tubular body 14, and the like.

図7(a)、図7(b)に、本実施形態の変形例の環管形ランプ100A・100Bを示す。図7(a)、図7(b)は、環管状体14の管の軸Xに垂直な方向の断面形状を示している。   FIG. 7A and FIG. 7B show annular tube lamps 100A and 100B according to modifications of the present embodiment. 7A and 7B show a cross-sectional shape in a direction perpendicular to the axis X of the tube of the annular tubular body 14.

環管形ランプ100Aは、先の環管形ランプ100よりも幅広のヒートシンク6Aを備えており、配置面6bに、LED2が複数列(図では2列)で搭載されている。LED2を複数列配置とすることで、一列配置よりも多数のLED2を搭載することができるので照度を上げることができる。また、LED2を、白色と昼白色との2色を組み合わせて用いたりすることもできる。なお、一列配置において、2色の組合せももちろん可能である。   The annular tube lamp 100A includes a heat sink 6A that is wider than the previous annular tube lamp 100, and the LEDs 2 are mounted in a plurality of rows (two rows in the figure) on the arrangement surface 6b. By arranging the LEDs 2 in a plurality of rows, a larger number of LEDs 2 can be mounted than in a row, so that the illuminance can be increased. Moreover, LED2 can also be used combining two colors, white and white. Of course, a combination of two colors is also possible in the one-row arrangement.

環管形ランプ100Bは、先の環管形ランプ100よりも幅広で、かつ、LED2の配置面6bとして、前記した角度θ(環管状体14の管の軸Xを含む面Yに対してなす角度θ)が異なる複数の面(図では2面)有した、ヒートシンク6Bを備えている。配置面6b−1と配置面6b−2とは、例えば120度の角度をなし、軸Xにその中心を合わせて、軸Xを含む面Yに対して中心が45度の位置になるように設けられている。この場合、配置面6b−1は前記角度θであるθ1(第1の角度)が15度に、配置面6b−2は、前記角度θであるθ2(第2の角度)が75度に設定されている。   The ring-shaped lamp 100B is wider than the previous ring-shaped lamp 100, and the arrangement surface 6b of the LED 2 is formed with respect to the angle θ (the surface Y including the axis X of the tube of the ring-shaped tubular body 14). A heat sink 6B having a plurality of surfaces (two surfaces in the drawing) having different angles θ) is provided. For example, the arrangement surface 6b-1 and the arrangement surface 6b-2 form an angle of 120 degrees, and the center is aligned with the axis X so that the center is at a position of 45 degrees with respect to the plane Y including the axis X. Is provided. In this case, θ1 (first angle) that is the angle θ is set to 15 degrees on the arrangement surface 6b-1, and θ2 (second angle) that is the angle θ is set to 75 degrees on the arrangement surface 6b-2. Has been.

これらの場合も、上記したLED2の配置は、LED2をなすLEDデバイスの配光特性、ケース部材1の透過率/分散度(拡散度)、ケース部材1の内径等により最適配置が決まる。   Also in these cases, the optimal arrangement of the LED 2 described above is determined by the light distribution characteristics of the LED device that constitutes the LED 2, the transmittance / dispersion degree (diffusivity) of the case member 1, the inner diameter of the case member 1, and the like.

特に、環管形ランプ100Bによれば、第1の角度で斜め配置されたLED2の組と、第2の角度で斜めに配置された固体発光素子の組との2組とで、光軸方向に出射された最も輝度の高い光が照射される領域、および光軸から傾いて斜めに出射された輝度の低い光が照射される領域が異なるので、より一層照度のムラを抑えて均一に照らすことができると共に、広配光が可能になる。   In particular, according to the ring-shaped lamp 100B, in the optical axis direction, there are two sets of a set of LEDs 2 obliquely arranged at a first angle and a pair of solid-state light emitting elements arranged obliquely at a second angle. Since the area irradiated with the light with the highest brightness emitted from and the area irradiated with the light with the low brightness emitted obliquely from the optical axis are different, the illumination is evenly suppressed with even more uneven illumination. And wide light distribution is possible.

最後、図8を用いて、環管形の照明装置に限らず、ケース部材61を介して光が照射されるLED2を複数備えた照明装置であれば、複数のLED2を斜めに取り付けると共に、その角度を、ケース部材1を介して主たる被照射面に照射された場合の照度を基に、光軸方向に出射される光と比較して輝度の低い光同士が重なり合うことで、被照射面における輝度の最も高い光が照射される領域と同等の照度となるように設定することで、光を有効に照射して、照度ムラを抑えながら広配光の照明装置を実現することができる点について説明する。   Finally, using FIG. 8, if it is an illuminating device provided with a plurality of LEDs 2 that are irradiated with light through the case member 61 as well as an annular tube illuminating device, a plurality of LEDs 2 are attached obliquely, Based on the illuminance when the main surface to be irradiated is irradiated through the case member 1 at an angle, light having low luminance compared to the light emitted in the optical axis direction overlaps with each other on the surface to be irradiated. By setting the illumination intensity to be equivalent to that of the area irradiated with the light with the highest luminance, it is possible to effectively illuminate the light and realize an illumination device with a wide light distribution while suppressing uneven illumination. explain.

図8は、例えば、内部に複数のLED2が並設された2本の直管形の直管形ランプ101・102を備えた照明装置であり、2本の直管形の直管形ランプ101・102の内部に配置されたLED2が、直下位置よりも互いに外側を向くように斜めに、保持部材70に取り付けられた構成を示している。   FIG. 8 shows an illuminating device including, for example, two straight-tube-type lamps 101 and 102 in which a plurality of LEDs 2 are arranged in parallel. -LED2 arrange | positioned inside 102 shows the structure attached to the holding member 70 diagonally so that it might face an outer side rather than a direct lower position.

直管形ランプ101・102は、取り付けられた状態で、直管形ランプ101のケース部材61内部に収容されたLED2の光軸と、直管形ランプ102のケース部材61内部に収容されたLED2の光軸を、直下方向ではなく、互いに外側を向いて被照射面に対して傾斜するよう配置されている。   The straight tube lamps 101 and 102 are attached to the optical axis of the LED 2 housed in the case member 61 of the straight tube lamp 101 and the LED 2 housed in the case member 61 of the straight tube lamp 102. Are arranged so as to be inclined with respect to the surface to be irradiated so as to face each other, not directly downward.

このような構成とすることで、直管形ランプ101・102の各LED2から光軸方向に出射される最も輝度の高い光L1は、床面等の主たる被照射面に対して、互いに外側向いて照射される。そのため、最も輝度の高い光L1を、直管形ランプ101・102を備えた照明装置の直下位置の両側に照射することができる。そして、直管形ランプ101・102を備えた照明装置の直下位置においては、直管形ランプ101・102の各LED2から、斜めに(光軸に対して傾きを持って)出射された輝度の低い光が照射されることとなるが、これらが重なり合うので、最も輝度の高い光が照射された直下位置の両側に劣らない照度を得ることができる。さらに、直管形ランプ101・102の各LED2から、斜めに出射された光は、天井等の照明装置の取り付け面側にも照射されるので、広い配光を実現することができる。   With this configuration, the light L1 having the highest luminance emitted from the LEDs 2 of the straight tube lamps 101 and 102 in the optical axis direction is directed outward from the main irradiated surface such as the floor surface. Is irradiated. Therefore, it is possible to irradiate the light L1 having the highest luminance on both sides of the position immediately below the illumination device including the straight tube lamps 101 and 102. Then, at a position directly below the illuminating device including the straight tube lamps 101 and 102, the luminance emitted obliquely (with an inclination with respect to the optical axis) from each LED 2 of the straight tube lamps 101 and 102 is shown. Although low light will be irradiated, since these overlap, the illuminance which is not inferior to both sides of the position immediately under the light with the highest luminance can be obtained. Furthermore, the light emitted obliquely from each LED 2 of the straight tube lamps 101 and 102 is also irradiated on the mounting surface side of the lighting device such as the ceiling, so that a wide light distribution can be realized.

これにより、照明装置の直下位置に光を集中させることなく、LED2から出射された光を直下位置の周囲にも効果的に振り分けて、床等の主たる被照射面を広い範囲でムラを抑えて照らすことができると共に、主たる被照射面に対する照度を確保しながら、天井側等の照明装置の取り付け面側への配光(広配光)が可能になる。   As a result, the light emitted from the LED 2 is effectively distributed to the periphery of the direct position without concentrating the light directly under the lighting device, and unevenness of the main irradiated surface such as the floor is suppressed over a wide range. In addition to being able to illuminate, light distribution (wide light distribution) to the mounting surface side of the lighting device such as the ceiling side becomes possible while ensuring illuminance on the main irradiated surface.

本発明は上述した各実施形態に限定されるものではなく、請求項に示した範囲で種々の変更が可能であり、異なる実施形態にそれぞれ開示された技術的手段を適宜組み合わせて得られる実施形態についても本発明の技術的範囲に含まれる。   The present invention is not limited to the above-described embodiments, and various modifications are possible within the scope shown in the claims, and embodiments obtained by appropriately combining technical means disclosed in different embodiments. Is also included in the technical scope of the present invention.

1 ケース部材
2 LED
2R・2L LED
3 LED基板
6 ヒートシンク
6A ヒートシンク
6B ヒートシンク
6a 露出面
6b 配置面
6b−1 配置面
6b−2 配置面
6c 平坦面
11c 切り欠き部
12 ケース上蓋
14 環管状体
15 電源基板
16 口金
61 ケース部材
70 保持部材
100A・100B 環管形ランプ
101・102 直管形ランプ
P1 直下位置
P2・P3 周囲位置
Z 法線方向
θ 傾斜角
S 光軸
L1 光軸方向に出射された光
L2 光軸に対して傾きをもって出射された光
1 Case member 2 LED
2R / 2L LED
3 LED board 6 Heat sink 6A Heat sink 6B Heat sink 6a Exposed surface 6b Arranged surface 6b-1 Arranged surface 6b-2 Arranged surface 6c Flat surface 11c Notch 12 Case upper lid 14 Ring-shaped tubular body 15 Power supply board 16 Base 61 Case member 70 Holding member 100A / 100B Ring tube lamp 101/102 Straight tube lamp P1 Directly below position P2 / P3 Ambient position Z Normal direction θ Inclination angle S Optical axis L1 Light L2 emitted in the optical axis direction Light

Claims (4)

環状に並設された複数の固体発光素子と、
前記複数の固体発光素子を内部に収容する環管状体と、を備える照明装置であって、
前記環管状体は、前記複数の固体発光素子からの出射光を透過する環管状のケース部材と、前記複数の固体発光素子からの熱を放熱する環状の放熱部材と、を含み、
前記放熱部材は、当該ケース部材がなす環に沿った環状の切り欠き部に設けられ、
前記切り欠き部は、前記ケース部材における内周側かつ当該照明装置の取り付け面側に形成され、
前記複数の固体発光素子は、前記放熱部材における前記ケース部材の内部に位置する面に、光軸が被照射面の法線方向に対して、前記環の径方向外側を向いて傾斜すべく配置され、当該照明装置が取り付けられた状態で、前記環管状体の管の軸を含む面に対して、前記環の径方向外側を前記取り付け面側に持ち上げる方向に傾斜していることを特徴とする照明装置。
A plurality of solid state light emitting devices arranged in a ring;
An annular device containing the plurality of solid state light emitting elements therein, and a lighting device comprising:
The annular tubular body includes an annular tubular case member that transmits light emitted from the plurality of solid state light emitting elements, and an annular heat radiation member that radiates heat from the plurality of solid state light emitting elements,
The heat radiating member is provided in an annular notch along the ring formed by the case member,
The notch is formed on the inner peripheral side of the case member and on the mounting surface side of the lighting device,
The plurality of solid state light emitting elements are arranged on the surface of the heat radiating member located inside the case member so that the optical axis is inclined toward the radially outer side of the ring with respect to the normal direction of the irradiated surface. In the state where the lighting device is attached, the illumination device is inclined with respect to the surface including the axis of the tube of the annular tubular body in a direction of lifting the radially outer side of the ring toward the attachment surface. Lighting device.
前記放熱部材における前記ケース部材の内部に位置する面には、当該放熱部材がなす環の周方向に連なると共に該環の径方向外側より径方向内側へと傾斜した複数の平坦面が形成されており、該平坦面に前記固体発光素子が配置されていることを特徴とする請求項に記載の照明装置。 On the surface of the heat radiating member located inside the case member, there are formed a plurality of flat surfaces that are continuous in the circumferential direction of the ring formed by the heat radiating member and are inclined from the radially outer side of the ring to the radially inner side. cage lighting device of claim 1, wherein the solid-state light-emitting element to the flat surface is disposed. 前記固体発光素子は、前記環管状体の管の軸を含む面に対して、30〜60度の傾きを有していることを特徴とする請求項1又は2に記載の照明装置。 The solid-state light-emitting element, the relative plane containing the axis of the ring the tubular body of the tube, the lighting device according to claim 1 or 2, characterized in that it has an inclination of 30-60 degrees. 前記複数の固体発光素子は、第1の角度で斜めに配置された組と、第2の角度で斜めに配置された組とを含んでいることを特徴とする請求項1〜3の何れか1項に記載の照明装置。 The plurality of solid state light emitting devices, a pair disposed obliquely at a first angle, any one of claims 1 to 3, characterized in that it comprises a pair arranged obliquely at a second angle The lighting device according to item 1.
JP2011131590A 2011-06-13 2011-06-13 Lighting device Active JP5781374B2 (en)

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